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References: <alpine.DEB.2.02.1301271518150.28994@stedding.saclay.inria.fr>	<CAFiYyc336qhuVSRqnxv_yV+zBAr6O+u4MVB0xA-V+iEURbfQeQ@mail.gmail.com>	<alpine.DEB.2.02.1301300027360.3971@laptop-mg.saclay.inria.fr>	<CAFiYyc30gKXWi840WWesybvG-Wr_v3FupTySM51i-YOLYp-QSg@mail.gmail.com>	<alpine.DEB.2.02.1303301620340.10575@stedding.saclay.inria.fr>	<alpine.DEB.2.02.1304011738070.3880@laptop-mg.saclay.inria.fr>
Date: Tue, 02 Apr 2013 13:29:00 -0000
Message-ID: <CAFiYyc3zTzFjSZ=RnFo2Y-RxfN1a8fU_Qfdu9qH6MY4sRRi3LA@mail.gmail.com>
Subject: Re: SLP for vectors
From: Richard Biener <richard.guenther@gmail.com>
To: Marc Glisse <marc.glisse@inria.fr>
Cc: gcc-patches@gcc.gnu.org
Content-Type: text/plain; charset=ISO-8859-1
X-SW-Source: 2013-04/txt/msg00092.txt.bz2

On Mon, Apr 1, 2013 at 5:52 PM, Marc Glisse <marc.glisse@inria.fr> wrote:
> On Sat, 30 Mar 2013, Marc Glisse wrote:
>
>>         * tree-flow-inline.h (get_addr_base_and_unit_offset_1): Handle
>>         BIT_FIELD_REF.
>
>
> I wrote a safer version of this for PR52436:

That variant is ok - please test and commit separately.

Thanks,
Richard.

>
>
>         case BIT_FIELD_REF:
> -         return NULL_TREE;
> +         {
> +           HOST_WIDE_INT this_off = TREE_INT_CST_LOW (TREE_OPERAND (exp,
> 2));
> +           if (this_off % BITS_PER_UNIT)
> +             return NULL_TREE;
> +           byte_offset += this_off / BITS_PER_UNIT;
> +         }
> +         break;